Bristell B23-915
Airplane Maintenance Manual
supplement
Chapter 28
Issue: 09.12.2021
Chapter 28 Page 7
7
Fuel pressure sensor
8
Fine filter bypass (w. check valve)
9
Fuel fine filter
10
High pressure fuel feed line
11
Return fuel line (from engine)
12
Fuel return bypass (w. check valve)
13
Fuel return lines to tanks
28-20-01 Electric Fuel Pump
Check
Check for Cracks
▶
Open the fuel pumps access hatch on the front fuselage
belly skin.
▶
Check the fuel pump assembly (pump bodies, hoses,etc.)
for cracks, especially inlet and the outlet hoses.
▶
If cracks are detected, immediately exchange the fuel
pump assembly.
Checking Fuel Leakage
▶
Perform fuel system inspection and visually inspect fuel
pump (pump bodies, hoses, etc.), especially fuel pump
inlet and outlet hose, for fuel leakage (e.g. droplets,
“wet
-
spots”)
.
▶
In case of fuel leakage, find out the reason and if
necessary, exchange the fuel pump assembly.
28-20-02 Pick-up Line
The pick-up line is located on the feed line on root tank rib. It isn`t
removable. For cleaning the fuel sensor can be removed.
Figure 5
Pick-up Line
